Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Rohit John posted a new comment:
Hello all,
I managed to make the code I had posted earlier faster (#6) by getting
an analytical solution for the non linear equations. The code is given
below. It affects the
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Open => Answered
Jan Stránský proposed the following answer:
Hello,
nice catch.
I suspect eccentricAxisEngine function, the part after "#" line, the angular
velocity part.
It is entirely based on
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Answered => Open
Rohit John is still having a problem:
Dear Jan,
I tried the same test, explain in the previous comment, on a clump which
is force to rotate about the origin using a penalty force
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Rohit John posted a new comment:
Dear Jan,
I performed a simple test on your code. I tried simulating what would
happen a sphere hits the clump "pendulum". Then the angular velocity
about the origin was plotted
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Rohit John posted a new comment:
Dear Karol and Jan,
Thanks for taking time from your work to come up with really creative
solutions to my problem. I will test the solutions and let you know what
I find.
Kind
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Jan Stránský proposed the following answer:
My "velocity" contribution (I could not resist and tried the "velocity"
approach :-)
Recalling the idea:
- after InteractionLoop before NewtonIntegrator, forces (i.e.
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Open => Answered
Karol Brzezinski proposed the following answer:
Hi,
I came up with a simple idea, that could work. It doesn't require any
optimization tools, so theoretically should be faster.
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Answered => Open
Rohit John is still having a problem:
Dear Jan,
Thanks for clearing my doubt and your idea. I figured out a method using
Lagrangian Dynamics and Lagrangian multipliers. The Idea is
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Open => Answered
Jan Stránský proposed the following answer:
Hello,
> From what I understand, the rotationEngine forces the body to rotate
about a given axis at a given angular velocity. I want the
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Needs information => Open
Rohit John gave more information on the question:
Dear Karol,
> aren't those two statements opposite:
- You are correct, I made a mistake. It is supposed to be
"I am
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Open => Needs information
Karol Brzezinski requested more information:
Hi John,
aren't those two statements opposite:
>I am trying to simulate a rigid box that is constrained to rotate about an
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Needs information => Open
Rohit John gave more information on the question:
Hello Jan,
I am trying to simulate a rigid box that is constrained to rotate about
an axis that does pass through its
Question #698572 on Yade changed:
https://answers.launchpad.net/yade/+question/698572
Status: Open => Needs information
Jan Stránský requested more information:
Hello,
please provide more information about your situation. Mainly if the constrained
body has blocked DOFs (its motion is
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